John Neil Gray
Warning: This is not intended to be an exhaustive history of this individual,
but an indication of the changes of positions and the links between companies, directors
and managers in those companies. Only collieries, pits etc. in the North of England are shown - the
individual may be involved with other companies or collieries outside this area and there may have
been other positions for which we currently do not have details.
Managers Certificate
11 June 1908, Certificate Number: 3,134 (1st), District: East Scotland
Certificate of Competency as a Manager of Mines granted under the Coal Mines Regulation Act, 1887 (50 & 51 Vict. Cap. 58, Secs. 23 and 80)
Managers Certificate
17 July 1912, Certificate Number: 3,134, Inspector: J. B. Atkinson
First Class Certificate of Competency as Manager of a Mine has been endorsed by H.M. Inspectors of Mines with the Qualification of Surveyor of Mines, during the year 1912
Colliery Staff Positions held
Colliery Staff Positions held
Positions held
| Position | Company | Correspondence Address |
| Agent: | Naworth Coal Co. |
Millfield, Wooler, Northumberland |
| Source: 1923 Colliery Year Book and Coal Trades Directory |
- 1914 List of Mines - Government report from the Mines Department, from a copy held in the Scottish Mining Museum, Newtongrange, Midlothian
- 1918 List of Mines
- 1923 Colliery Year Book and Coal Trades Directory. Published by The Louis Cassier Co. Ltd., from a copy held in the Scottish Mining Museum, Newtongrange, Midlothian
